I can't help thinking the writers of this drama happened upon the interesting fact that gives the end its twist and decided to write a 'what if' story so that they could present us with said interesting fact. The plot and characters were hugely undeveloped. There is no reason given for the murder of Jane's mother. Everyone seems to have moved on with their lives and its hard to feel invested in any of the characters. Having said all that it is a pretty decent British drama with some wonderful actors in it so not a waste of time watching at all. I'm just disappointed that the story wasn't fleshed out more, that there wasn't some surprising twist uncovering the events surrounding the murder and telling us why it happened - It could have been gripping.
Review of Undeniable
